Basic design integration from Kaoji's design.
Add icons to be cleaner.
Be consistent regarding "dark" links color on hover.
Change disposition of elements in topic list item.
Align the bottom of tags with the bottom of avatar.
Fix test (failing because of added validations).
Spec and fix a bug. When a user read an initial topic then a reply is posted the topic is now marked as unread for the user.
Use presenters to lighten the views.
Hide some links for guests.
Prettify the side bar area of guest user.
Rename color variables.
Imrpove the design.
Fix a bug introduced producing duplicate topics.
Restore tag links.
Colorize the active tags of a search.
Add the author name to topics in list.
Add search bar to search page.
Add twitter-bootstrap dependency.
Rewrite from scratch CSS.
Improve responsive for <= 1200 (full width and other stuff).